Biting a Vampire 

Momoichi Kuroda just wants to become stronger. He may have won all the fistfights he's ever fought, but he just can't help but think there's a way to be even stronger than this. When he sees his classmate Shirato in a compromising position, he gets to witness his deepest, darkest secret - and the rare kind of "strength" Kuroda could only dream of having. So the question now is, will Shirato turn him into a vampire already!? (Source: futekiya) Chapter count includes an extra and a one shot